Quantitative evaluation of strength degradation by using linear-nonlinear ultrasonic techniques

2016 ◽  
Vol 140 (4) ◽  
pp. 3166-3166
Author(s):  
Kyung-Young Jhang ◽  
Jongbeom Kim ◽  
Ju-ho Lee
Keyword(s):  
Quantitative Evaluation ◽  
Strength Degradation ◽  
Nonlinear Ultrasonic ◽  
Ultrasonic Techniques

Monitoring damage in composite plates from crack initiation to macro-crack propagation combining linear and nonlinear ultrasonic techniques

2020 ◽  
pp. 147592172092292
Author(s):  
Hamad Alnuaimi ◽  
Umar Amjad ◽  
Pietro Russo ◽  
Valentina Lopresto ◽  
Tribikram Kundu
Keyword(s):  
Composite Plates ◽  
Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Damage Progression ◽  
Nonlinear Ultrasonic ◽  
Ultrasonic Techniques ◽  
Linear And Nonlinear ◽  
Ultrasonic Parameters ◽  
Peak Count ◽  
Ultrasonic Parameter

In this article, a holistic technique for sensing damage initiation, as well as damage progression in composite plates, is presented combining linear and nonlinear ultrasonic techniques. For this investigation, multiple sets of composite plate specimens made of two different composite materials were fabricated to check if the proposed technique works for different types of specimens. The specimens were damaged by impact loading and then inspected by propagating Lamb waves through them. Different failure mechanisms, such as fiber breaks, matrix cracking, debonding, and delamination, cause composite damage. Two groups of composite specimens that were fabricated and damaged were glass fiber–reinforced polymer composite and basalt fiber–reinforced polymer composite. A chirp signal excited by PZT (lead zirconate titanate) transducer was propagated through undamaged and damaged specimens to investigate the effects of varying degrees of damage on the recorded signals. Both linear and nonlinear ultrasonic parameters were extracted from the recorded signals and analyzed. The change in the linear ultrasonic parameters such as the wave speed and attenuation with damage progression were recorded. A new nonlinear ultrasonic parameter, the sideband peak count or sideband peak count-index, is also introduced and calculated from the recorded signals. It is observed that the nonlinear ultrasonic parameter can monitor the early stage of damage progression better than the linear ultrasonic parameters, while some linear ultrasonic parameters are more effective than the nonlinear ultrasonic parameter for monitoring the advanced stage of damage. Therefore, a combination of linear ultrasonic and nonlinear ultrasonic analyses is ideal for the holistic monitoring of the composite panels from the crack nucleation stage to the structural failure stage.

scholarly journals Dynamic acousto-elastic testing of concrete with a coda-wave probe: comparison with standard linear and nonlinear ultrasonic techniques

Ultrasonics ◽  
2017 ◽  
Vol 81 ◽  
pp. 59-65 ◽  
Author(s):  
Parisa Shokouhi ◽  
Jacques Rivière ◽  
Colton R. Lake ◽  
Pierre-Yves Le Bas ◽  
T.J. Ulrich
Keyword(s):  
Coda Wave ◽  
Nonlinear Ultrasonic ◽  
Standard Linear ◽  
Ultrasonic Techniques ◽  
Linear And Nonlinear

scholarly journals Nonlinear Ultrasonic Guided Wave Method Using Semi-Analytical Finite Element (SAFE) Technique on a Damaged SWO-V Spring Coil

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 752
Author(s):  
Jeongnam Kim ◽  
Junpil Park ◽  
Bo Zhu ◽  
Younho Cho
Keyword(s):  
Finite Element ◽  
Shot Peening ◽  
Guided Wave ◽  
Phase Matching ◽  
Linear Elastic ◽  
Ultrasonic Guided Wave ◽  
Nonlinear Ultrasonic ◽  
Safe Technique ◽  
Ultrasonic Techniques ◽  
Non Destructive

This work presents a non-destructive method for quantitative essessment of fatigue damage of materials with linear elastic properties using nonlinear ultrasonic techniques. A nonlinear study was conducted on these materials with fatigue and shot peening processing using a nonlinear ultrasonic technique. A numerical method based on the semi-analytical finite element (SAFE) technique, was used to obtain the phase-matching modes of the specimens. Experiments confirm that the nonlinearity for shot peening and samples with a certain level of fatigue shows a tendency to increase with levels of fatigue.

scholarly journals Technical Report on the Status of Nonlinear Ultrasonic Techniques for Non-Destructive Inspection

2014 ◽  
Author(s):  
Brian Anderson ◽  
Marcel Remillieux ◽  
Sylvain Haupert ◽  
Yoshikazu Ohara ◽  
Colton Lake ◽  
...  
Keyword(s):  
Technical Report ◽  
Nonlinear Ultrasonic ◽  
The Status ◽  
Ultrasonic Techniques ◽  
Non Destructive

scholarly journals Nonlinear Ultrasonic Techniques to Monitor Radiation Damage in RPV and Internal Components

2015 ◽  
Author(s):  
Laurence Jacobs ◽  
Jin-Yeon Kim ◽  
Jisnmin Qu ◽  
Pradeep Ramuhalli ◽  
Joe Wall
Keyword(s):  
Radiation Damage ◽  
Nonlinear Ultrasonic ◽  
Ultrasonic Techniques
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